Larsen, WI Radon Mitigation and Testing

Q: What EPA Radon Zone is Larsen in?

Larsen is in Winnebago County, EPA Zone 2.

Q: How much does radon mitigation cost in Larsen?

Radon mitigation typically costs between $800 and $2,000. Most standard systems fall in the $1,000-$1,500 range.

Winnebago County

EPA Zone 2

Larsen, WI resides in Winnebago County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. Testing is recommended for all homes in the 54947 zip code area.

Larsen, WI Radon Mitigation

Professional radon mitigation is the most effective way to permanently lower radon levels and protect your household.

Larsen, WI Radon Testing

Finding qualified radon testing professionals is the first step toward protecting your home.

Larsen Radon Facts

Key details about the radon risk profile for Larsen and the 54947 zip code area.

EPA Radon Zone

Zone 2 — Moderate Risk

County

Winnebago County, WI

Zip Code

54947

Predicted Screening Level

2–4 pCi/L (Zone 2)

Larsen and the 54947 zip code are located in Winnebago County, which has an EPA assigned Radon Zone of 2. A radon zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L. The EPA recommends testing every home regardless of zone classification.

Radon FAQ for Larsen, WI

What EPA Radon Zone is Larsen in?

Larsen and the 54947 zip code are in Winnebago County, which has an EPA assigned Radon Zone of 2. A zone of 2 predicts an average indoor radon screening level between 2 and 4 pCi/L.

How much does radon mitigation cost in Larsen?

Radon mitigation in Larsen typically costs between $800 and $2,000. Most homes with standard basements can be mitigated with a sub-slab depressurization system in the $1,000–$1,500 range. Factors that can increase cost include complex foundations, crawl spaces, or very high radon levels.

Should I test for radon if I'm buying a home in Larsen?

Yes. Radon testing should be part of every home purchase. A short-term radon test is typically included as part of the home inspection process and costs $150–$250. If elevated levels are found, you can negotiate mitigation as part of the sale.

Most Active Radon Markets in Wisconsin

Cities with the most user-submitted radon test data in the state.

City	Avg User Radon Level	Submissions
Milwaukee	10.00 pCi/L	3
Prairie Du Chien	10.00 pCi/L	2
Stevens Point	5.50 pCi/L	2
Menomonie	10.00 pCi/L	1
Delavan	6.00 pCi/L	1
Shawano	No submissions	0
Sturgeon Bay	No submissions	0